Digital Marionette

thingiverse

# Passive Rider Animation copyright 2023 Michael Lastufka ## Marionette style control points in external source's coordinates: * All measurements are in inches and degrees. * Frame coords x="+fore -back" y="+left -right" z="+up - down" ## Hand/Feet Target points provided by external source: handL, handR, footL, footR ## Posture provided by external source: cm: Center of mass point (between spine and hips) spineAxis: Spine Axis vector or unit vector passing through cm ## Controls: Shoulder and hip rotation: spinS, spinH ## Main module: Rider(handL, handR, footL, footR, cm, spineAxis, spinS, spinH) ## Support modules: `JointedAppendage(bodyAttachment, medialLen, distalLen, freeEnd, splay, label="Appendage", orient)` `CylinderSpan(origin, endPt, radius)` ## Support functions: `ShoulderSocket(side, spinS, tiltAxis, tiltAng)` `JointPos(bodyAttachment, medialLen, distalLen, freeEnd, splay, orient)` `RotateAroundAxis(pt, axis, angle)` `CircleInsect2D(r1,x1,y1,r2,x2,y2,tailSign)` `Transpose(A)` ## Examples: (View-Animate in Open SCAD using FPS and Steps commented in files) 1. Rider.scad - Self contained "Dance" animation. 2. BoxTrot.scad - Solid Box model for Rider to move. 3. TrikkeAni.scad - Articulated model of a Trikke T8 body powered carving vehicle for Rider to ride.